prefactors were not used/not mentioned in the paper
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Martin Diehl
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7d40d13b4c
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d9e497bdd8
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@ -50,7 +50,6 @@ module plastic_dislotwin
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qShearBand, & !< q-exponent in shear band velocity
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CEdgeDipMinDistance, & !<
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Cmfptwin, & !<
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Cthresholdtwin, & !<
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SolidSolutionStrength, & !<strength due to elements in solid solution
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L0_twin, & !< Length of twin nuclei in Burgers vectors
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L0_trans, & !< Length of trans nuclei in Burgers vectors
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@ -67,7 +66,6 @@ module plastic_dislotwin
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aTolTransFrac, & !< absolute tolerance for integration of trans volume fraction
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deltaG, & !< Free energy difference between austensite and martensite
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Cmfptrans, & !<
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Cthresholdtrans, & !<
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transStackHeight !< Stack height of hex nucleus
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real(pReal), dimension(:), allocatable :: &
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rho_mob_0, & !< initial unipolar dislocation density per slip system
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@ -141,7 +139,7 @@ module plastic_dislotwin
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mfp_slip, &
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mfp_twin, &
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mfp_trans, &
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threshold_stress_slip, &
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tau_pass, &
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threshold_stress_twin, &
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threshold_stress_trans, &
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twinVolume, &
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@ -353,7 +351,6 @@ subroutine plastic_dislotwin_init
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prm%xc_twin = config%getFloat('xc_twin')
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prm%L0_twin = config%getFloat('l0_twin')
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prm%Cthresholdtwin = config%getFloat('cthresholdtwin', defaultVal=0.0_pReal)
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prm%Cmfptwin = config%getFloat('cmfptwin', defaultVal=0.0_pReal) ! ToDo: How to handle that???
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prm%shear_twin = lattice_characteristicShear_Twin(prm%N_tw,config%getString('lattice_structure'),&
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@ -386,7 +383,6 @@ subroutine plastic_dislotwin_init
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prm%burgers_trans = config%getFloats('transburgers')
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prm%burgers_trans = math_expand(prm%burgers_trans,prm%Ntrans)
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prm%Cthresholdtrans = config%getFloat('cthresholdtrans', defaultVal=0.0_pReal) ! ToDo: How to handle that???
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prm%transStackHeight = config%getFloat('transstackheight', defaultVal=0.0_pReal) ! ToDo: How to handle that???
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prm%Cmfptrans = config%getFloat('cmfptrans', defaultVal=0.0_pReal) ! ToDo: How to handle that???
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prm%deltaG = config%getFloat('deltag')
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@ -591,7 +587,7 @@ subroutine plastic_dislotwin_init
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allocate(dst%invLambdaSlipTwin (prm%totalNslip, NipcMyPhase),source=0.0_pReal)
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allocate(dst%invLambdaSlipTrans (prm%totalNslip, NipcMyPhase),source=0.0_pReal)
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allocate(dst%mfp_slip (prm%totalNslip, NipcMyPhase),source=0.0_pReal)
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allocate(dst%threshold_stress_slip (prm%totalNslip, NipcMyPhase),source=0.0_pReal)
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allocate(dst%tau_pass (prm%totalNslip, NipcMyPhase),source=0.0_pReal)
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allocate(dst%invLambdaTwin (prm%totalNtwin, NipcMyPhase),source=0.0_pReal)
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allocate(dst%mfp_twin (prm%totalNtwin, NipcMyPhase),source=0.0_pReal)
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@ -715,7 +711,7 @@ subroutine plastic_dislotwin_LpAndItsTangent(Lp,dLp_dMp,Mp,Temperature,instance,
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0, 1, 1 &
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],pReal),[ 3,6])
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associate(prm => param(instance), stt => state(instance), dst => microstructure(instance))
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associate(prm => param(instance), stt => state(instance))
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f_unrotated = 1.0_pReal &
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- sum(stt%twinFraction(1:prm%totalNtwin,of)) &
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@ -968,17 +964,17 @@ subroutine plastic_dislotwin_dependentState(temperature,instance,of)
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dst%mfp_trans(:,of) = prm%Cmfptrans*prm%GrainSize/(1.0_pReal+prm%GrainSize*dst%invLambdaTrans(:,of))
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!* threshold stress for dislocation motion
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forall (i = 1:prm%totalNslip) dst%threshold_stress_slip(i,of) = &
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forall (i = 1:prm%totalNslip) dst%tau_pass(i,of) = &
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prm%mu*prm%b_sl(i)*&
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sqrt(dot_product(stt%rhoEdge(1:prm%totalNslip,of)+stt%rhoEdgeDip(1:prm%totalNslip,of),&
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prm%h_sl_sl(:,i)))
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!* threshold stress for growing twin/martensite
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if(prm%totalNtwin == prm%totalNslip) &
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dst%threshold_stress_twin(:,of) = prm%Cthresholdtwin* &
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dst%threshold_stress_twin(:,of) = &
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(SFE/(3.0_pReal*prm%b_tw)+ 3.0_pReal*prm%b_tw*prm%mu/(prm%L0_twin*prm%b_sl)) ! slip burgers here correct?
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if(prm%totalNtrans == prm%totalNslip) &
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dst%threshold_stress_trans(:,of) = prm%Cthresholdtrans* &
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dst%threshold_stress_trans(:,of) = &
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(SFE/(3.0_pReal*prm%burgers_trans) + 3.0_pReal*prm%burgers_trans*prm%mu/&
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(prm%L0_trans*prm%b_sl) + prm%transStackHeight*prm%deltaG/ (3.0_pReal*prm%burgers_trans) )
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@ -1052,7 +1048,7 @@ function plastic_dislotwin_postResults(Mp,Temperature,instance,of) result(postRe
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enddo
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c = c + prm%totalNslip
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case (threshold_stress_slip_ID)
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postResults(c+1:c+prm%totalNslip) = dst%threshold_stress_slip(1:prm%totalNslip,of)
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postResults(c+1:c+prm%totalNslip) = dst%tau_pass(1:prm%totalNslip,of)
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c = c + prm%totalNslip
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case (f_tw_ID)
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@ -1158,7 +1154,7 @@ pure subroutine kinetics_slip(Mp,Temperature,instance,of, &
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tau(i) = math_mul33xx33(Mp,prm%Schmid_slip(1:3,1:3,i))
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enddo
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tau_eff = abs(tau)-dst%threshold_stress_slip(:,of)
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tau_eff = abs(tau)-dst%tau_pass(:,of)
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significantStress: where(tau_eff > tol_math_check)
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stressRatio = tau_eff/(prm%SolidSolutionStrength+prm%tau_peierls)
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